La Scala Theatre, known in full as Teatro alla Scala, officially opened on August 3, 1778, with a lavish première of the opera 'Europa riconosciuta' composed by Antonio Salieri. The theatre was designed by the architect Giuseppe Piermarini and was praised for its stunning neoclassical design and extraordinary acoustics, which allowed for clear sound projection to audiences seated in the grand auditorium. The choice to feature Salieri's opera was significant, as it not only celebrated the theatre's inaugural event but also showcased the vibrant operatic culture of Milan during the 18th century.

Salieri, who was a prominent composer in his day, created 'Europa riconosciuta' to be a dramatic representation of themes related to identity and recognition, resonating with the zeitgeist of the time. The opera combines beautiful melodies with engaging narratives, reflecting the artistry that characterised the era's theatrical works. The event gathering nobility, artistic elites, and public citizens, turned into a cultural celebration, marking the beginning of La Scala's reputation as a premier venue for opera, where many legendary performances would unfold over the years.

The opening performance was a resounding success and set a high standard for future productions. It firmly established La Scala as an essential institution in the operatic world, providing a stage for numerous famous composers, including later works by Giuseppe Verdi and Giacomo Puccini. The theatre has since undergone restorations and remains a symbol of Milan's rich cultural heritage, attracting millions of visitors and opera lovers from around the world, making it an enduring beacon of artistic achievement in the performing arts.